<template>
	<!-- 数字华容道 -->
	<view class="klotski z-height flexColumn">
		<!-- 当前等级 -->
		<view class="klotski-status flexCenter">
			<view class="klotski-status-item">
				<view class="klotski-status-rope"></view>
				<view class="klotski-status-level">
					<view class="klotski-status-level-box">3X3</view>
				</view>
			</view>
		</view>
		<!-- 时间、步数、等级选择 -->
		<view class="klotski-btns box">
			<!-- <view class="klotski-btns-title z-t-c" v-if="!is_start">目标关卡</view> -->
			<view class="flexBetween" style="height: 100%;">
				<view class="klotski-btns-time flexCenter">时间 {{time}}</view>
				<view class="klotski-btns-step flexCenter">步数 <text class="u-m-l-20">{{step}}</text></view>
				<view class="klotski-btns-level flexCenter" @click="bindLevel">等级</view>
			</view>
		</view>
		<!-- 游戏区 -->
		<view class="klotski-play">
			<view class="klotski-play-box">
				<view class="klotski-play-tr" v-for="(item1, index1) in newList" :key="index1">
					<view class="klotski-play-td" v-for="(item2, index2) in item1" :key="index2" @click="bindBlock(index1, index2)">
						<view class="klotski-play-td-box" v-if="item2 !== ''">
							<view class="klotski-play-td-block flexCenter">{{item2}}</view>
						</view>
					</view>
				</view>
			</view>
		</view>
		<!-- 开始游戏 -->
		<view class="flex1 flexCenter" v-if="!is_start">
			<view class="klotski-start" @click="playStart">开始游戏</view>
		</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				level: ['3X3', '4X4', '5X5'],
				is_start: false,
				is_over: false,
				rowcol: 3,
				list: [],
				newList: [],
				step: 0,
				time: 0,
				timer: null
			};
		},
		onLoad() {
			this.init()
		},
		onUnload() {
			clearInterval(this.timer)
		},
		methods:{
			// 一维数组转成二维数组
			changeDimen(arr){
				let newArr = []
				while(arr.length > 0){
					newArr.push(arr.splice(0, this.rowcol))
				}
				return newArr
			},
			// 初始化数组
			init(){
				for(let i = 0; i < this.rowcol*this.rowcol; i++){
					this.list[i] = i < this.rowcol*this.rowcol - 1 ? i + 1 : ""
					this.newList[i] = i < this.rowcol*this.rowcol - 1 ? i + 1 : ""
				}
				this.newList = this.changeDimen(this.newList)
			},
			// 开始游戏
			playStart(){
				this.is_over = false
				this.is_start = true
				this.newList = this.changeDimen(this.$u.randomArray(this.$u.deepClone(this.list)))
				this.timer = setInterval(()=>{
					this.time++
				},1000)
			},
			// 点击方块
			bindBlock(x, y){
				// 没开始 已结束 空方块
				if(!this.is_start || this.is_over || this.newList[x][y] == ''){
					return
				}
				// 判断上下左右
				if(this.newList[x - 1] && this.newList[x - 1][y] == ''){
					this.newList[x - 1][y] = this.newList[x][y]
					this.newList[x][y] = ""
					this.step++
				}
				if(x + 1 < this.rowcol && this.newList[x + 1][y] == ''){
					this.newList[x + 1][y] = this.newList[x][y]
					this.newList[x][y] = ""
					this.step++
				}
				if(y - 1 >= 0 && this.newList[x][y - 1] == ''){
					this.newList[x][y - 1] = this.newList[x][y]
					this.newList[x][y] = ""
					this.step++
				}
				if(y + 1 < this.rowcol && this.newList[x][y + 1] == ''){
					this.newList[x][y + 1] = this.newList[x][y]
					this.newList[x][y] = ""
					this.step++
				}
				this.$forceUpdate()

				// 判断是否赢了
				this.win()
			},
			// 判断是否赢了，就是把newlist数组变成一维数组，再去跟list比较是否相同
			win(){
				let newArr = this.newList.reduce((a, b) => { return a.concat(b) })
				if(this.list.toString() == newArr.toString()){
					clearInterval(this.timer)
					uni.showModal({
						title: "恭喜你赢了", 
						content: `用时:${this.time}s， 步数:${this.step}`, 
						showCancel: false,
						success: res => {
							if (res.confirm) {
								this.initGame()
							}
						}
					})
				}
			},
			// 选择等级
			bindLevel(){
				uni.showActionSheet({
					itemList: this.level,
					success: res => {
						this.rowcol = Number(this.level[res.tapIndex][0])
						this.initGame()
					}
				})
			},
			// 重置游戏
			initGame(){
				clearInterval(this.timer)
				this.is_over = false
				this.is_start = false
				this.step = 0
				this.time = 0
				this.timer = null
				this.list = []
				this.newList = []
				this.init()
			},
		}
	}
</script>

<style>
	page{background-color: rgba(241, 217, 183, 1);}
</style>
<style lang="scss" scoped>
@mixin three-dimensional{
	border-top: 8rpx solid rgb(248,232,210);
	border-right: 8rpx solid rgb(156,116,79);
	border-bottom: 8rpx solid rgb(136,99,65);
	border-left: 8rpx solid rgb(156,116,79);
}
.klotski-status{
	padding: 40rpx 30rpx;
	.klotski-status-level{
		position: relative;border-radius: 28rpx;background-color: rgb(180, 102, 61);padding: 10rpx;box-shadow: 10rpx 14rpx 10rpx 0rpx rgba(0,0,0,.6);
		.klotski-status-level-box{position: relative;width: 100%;height: 100%;padding: 10rpx 50rpx;background-color: rgb(241,241,241);border-radius: 20rpx;box-shadow: inset 2rpx 4rpx 10rpx 4rpx rgba(0,0,0,.6);font-weight: bold;font-size: 50rpx;}
	}
	.klotski-status-rope{
		position: relative;width: 100%;
		&::after{content: "";position: absolute;width: 10rpx;height: 80rpx;background-color: rgb(180, 102, 61);top: -60rpx;left: 50rpx;box-shadow: 10rpx 14rpx 10rpx 0rpx rgba(0,0,0,.6);}
		&::before{content: "";position: absolute;width: 10rpx;height: 80rpx;background-color: rgb(180, 102, 61);top: -60rpx;right: 50rpx;box-shadow: 10rpx 14rpx 10rpx 0rpx rgba(0,0,0,.6);}
	}
}
.klotski-btns{
	height: 134rpx; padding: 0 30rpx 40rpx;
	.klotski-btns-title{font-size: 70rpx;font-weight: bold;-webkit-text-stroke: 2rpx rgba(180, 102, 61,.5); background-image: linear-gradient(to bottom, rgb(254,243,201), rgb(254,235,38));-webkit-background-clip: text;color: transparent;}
	.klotski-btns-time{width: 210rpx;height: 60rpx; background-color: rgb(95,94,93);color: #fff;border-radius: 100rpx;box-shadow: inset 4rpx 4rpx 10rpx rgba(0,0,0,1);font-weight: bold;font-size: 30rpx;}
	.klotski-btns-step{width: 210rpx;height: 60rpx;background-color: #fff;font-weight: bold;font-size: 30rpx;border-radius: 100rpx;box-shadow: inset 4rpx 4rpx 10rpx rgba(0,0,0,.5);}
	.klotski-btns-level{width: 210rpx;height: 60rpx;background-color: rgb(69, 28, 13);color: rgb(254,228,58);font-weight: bold;font-size: 30rpx;border-radius: 20rpx;box-shadow: 0rpx 0rpx 10rpx 0rpx rgba(0, 0, 0, 1);}
}
.klotski-play{
	width: 100%;height: 750rpx;border-radius: 20rpx;background-color: rgb(69, 28, 13);border: 20rpx solid rgb(180, 102, 61);box-shadow: 0rpx 12rpx 15rpx 0rpx rgba(0,0,0,.6);
	.klotski-play-box{width: 100%;height: 100%;display: flex;flex-direction: column;border: 4rpx solid rgb(2,0,2);}
	.klotski-play-tr{display: flex;width: 100%;flex: 1;}
	.klotski-play-td{flex: 1;}
	.klotski-play-td-box{width: 100%;height: 100%;color: #fff;font-size: 80rpx;border: 4rpx solid rgb(2,0,2);}
	.klotski-play-td-block{width: 100%;height: 100%;background-color: rgb(232,189,131);color: rgb(78,28,9);font-weight: bold;@include three-dimensional;}
}
.klotski-start{padding: 40rpx 120rpx;background-color: rgb(69, 28, 13);color: #fff;font-weight: bold;font-size: 40rpx;border-radius: 100rpx;box-shadow: 0rpx 10rpx 15rpx 0rpx rgba(0,0,0,.4);animation: btnScale 1s infinite linear;}
@keyframes btnScale{
	0%{transform: scale(1);}
	50%{transform: scale(1.1);}
	100%{transform: scale(1);}
}
</style>
